Viscounts of los Palacios de la Valduerna Viscondes de los Palacios de la Valduerna First holder Pedro de Bazán, 1st viscount of Valduerna Records #5 Holders Family filter On/Off 1 Pedro de Bazán, 1st viscount of Valduerna 2 Juan Rodríguez de Bazán, 2nd viscount of Valduerna * c. 1450 3 Pedro de Bazán, 3rd viscount of Valduerna * c. 1480 4 Maria de Bazán, 4ª viscountess of Valduerna Santiago Mesía y Figueroa, viscount of los Palacios de la Valduerna * 1946 Corrections and Updates To suggest a correction or an update. Click Here